<template>
  <div id="app">
    <el-button 
      type="info" 
      icon="el-icon-caret-left" 
      circle class="back"
      @click="back">
      </el-button>
  </div>
</template>

<script>
export default {
  name: '',
  methods: {
    back() {
      // this.$router.push('index')
      this.$router.go(-1)
    }
  }
}
</script>

<style scoped>
  #app{
    position: fixed;
    z-index: 99;
    height: 50px;
    width: 50px;
    background-color:rgba(0, 0, 0, 0)
  }

  .back {
    width: 40px;
    height: 40px;
    font-size: 20px;
    padding: 0px;
    left: 20px;
    top: 20px;
  }
</style>
